| 초록 |
The heat generated by the bulbs in automotive lamps is transferred to the reflector and lens of the lamp through the heat transfer mechanism. If the heat transferred to the reflector and lens exceeds the heat resistance limit of the materials used in their production, deformation occurs. Therefore, designers must design lamps within a limited range, and if the lamps fail to pass the heat resistance test after design and production, the design process must be restarted from the beginning, which incurs considerable time and cost. By using a heat resistance prediction program, designers can save a significant amount in terms of time and cost that were previously required during the design-heat resistance test phase. Therefore, in this study, we sought to understand the temperature characteristics of lamps based on the heat transfer mechanism, using computational fluid dynamics(CFD) results for the development of a high-accuracy temperature prediction program for automotive lamps. We designed box-shaped lamps considering the size range of the actual manufactured lamps and using the heat transfer mechanism. The relationship between the maximum temperature of each surface obtained through CFD and the main factors including the size of the box, power of the bulb, and ambient temperature were verified. Based on these results, we developed a single-function lamp temperature prediction algorithm. |
